Oxyacetylene cutting-torch.



P. F. WILLIS.

OXYACBTYLBNE CUTTING TORCH.

APPLICATION FILED JULY 23, 1914.

1,1 19,917, Patented Dec.8, 1914.

PRIOR F. WILLIS, OF ST. LOUIS, MISSOURI.

OXYACETYLENE CUTTING-TORGH.

Specication of Letters Patent.

Patented Dee. s, 1914.

Application led July 23, 1914. Serial N0. 852,752.

T0 all whom. it may concern Be it known that I, lnion F. WILLIS, a citizen of the United States, and a resident of the city of St. Louis and State of Missouri, have invented a new and useful improvement in Oxyacetylene Cutting- Torches, of which the following is a specification.

This invention relates to cutting metal by means of an oxidizing flame, and consists in a torch for producing such a flame from oxygen and acetylene gases, or other com-V bustible gases, under pressure.

The object of the invention is an oxyacetylene cutting torch having a tip provided with separate passages for oxygen gas and for a combustible mixture of oxygen and acetylene.

Further objects of the invention appear in connection with the following description of the constructions shown in the accompanying drawings, which illustrate two :forms of the invention.

In the drawings, in which the same reference characters designate similar parts in the several views, Figure 1 is a cross-section of the head, tip and part of the handle of a cutting torch, the section being taken on the principal axis of the device, and the outer end of the tip being shown in side elevation; Fig. 2 is a cross-section of the same on the line 2-2 in Fig. 1; Fig. 3 is a. view of the inner end, and Fig. 4 is a side view of the tip; Fig. 5 is a part axial crosssection and part side view of a modified form of tip; and Fi 6 is a view of the inner end of the tip s own in Fig. 5.

Referring to Figs. 1 to 4, inclusive, the torch consists of a T-shaped head 11 having a conical socket 12 in its stem to receive the conical end 13 of the handle connection. The handle connection consists of an outer acetylene pipe 14 and an inner oxygen pipe 15, which are concentrically arranged and which are connected to the acetylene supply and to the oxygen supply, respectively. The conical end 13 has an axial bore through it for the oxygen pipe 15 and a circumferl vential groove 17 which is connected by passages 18 with the acetylene pipe 14. A sleeve nut 19 screws on the stem of the head and is provided with an annular flange 20 which projects inward at its outer end and engages with an external shoulder on the end of the tained in the socket 12.

One branch of the head has a socket 21 forthe tip, and the other branch of the head has a socket 22, in alinement with the socket 21. A plug 23 screws into the socket 22, the inner end of the plug being smaller than the socket and provided with a conical end 24 which is seated in a conical depression in the bottom of the socket. The outer end of the plug 23 projects from the socket 22 and carries a ring 25, which is attached to the end of an oxygen supply pipe 26. The ring is grooved around its interior, and the plug has a groove registering with the groove in the ring, whereby an annular chamber 27 is formed between the plug and ring in communication with the oxygen supply pipe 26. The plug has an axial hole 28 through it from end to end, and passages 29 through the wall of the plug connect the annular chamber 27 and axial hole 28. A-

ca-p nut 16 covers the outer end of the plug 23 and is screwed tight against the ring 25 to close the joints between the nut and ring and head.

A passage 30 connects the inner end of the conic. socket 12 with the vannular chamber surrounding the inner end of the plug 23 at the bottom of the socket 22. Small passages 31 connect this chamber with the socket 21, the passages being symmetrically arranged upon each side of the axis of the head. A middle hole 32 through the head in alinement with the axial hole 28 in the plug connects the conical depression in the bottom of the socket 22 with the socket 21. A side passage 33. connects the socket 12 with the socket 21. One end of the side passage 33 registers with the groove 17 in the conical end of the handle connection, and the other end emerges in the socket 21 at a greater distance from the center than the symmetrical passages 31. The inner end of the socket 21 is flat.

lThe tip 34 is flat on its inner end, and is held against the flat face of the socket 21 by a ring nut 35 which screws into the socket and bea-rs against a shoulder 36 around the inner end of the tip. The fiat inner end face of the tip is provided with two concentric annular grooves. The inner groove 37 registers with the ends of the passages 31, and the outer groove 38 registers with the end of the side passage 33. The tip has an axial passage 39 through it in alinement with the passages 28 and 32 inthe plug and head.

The tip also has two passages 40, one on ;.-connections. Yoxygen andi acetylene is ignited at the outer Vends of Vthe passages 4G, which 'are on oppoeach side of the axial passage 39, extending from its'outer end nearly to its inner end face. Small passages 41 connect the inner groove 37 in the end face of the tip with each of the passages 40, and small passages 2 connect the outer groove 38 with each of the passages 40, the passages 41 and 42 emerging-in the passages 40 in proximity and at an angle to each other. The relative sizes of the passages 41 and 42 are such as to pass a suitable amount of, oxygen and acetylene, respectively, to. produce a combustible mixture in the passages 40.

In the operation of the torch, oxygen and acetylenel gases are supplied to the pipes 15 and 14 through suitable valved connections, the valves being adapted to make the pressure of the oxygen about equal to that of the acetylene. Oxygen gas at a considerably higher pressure 1s supplied'to the pipe 26 through a suitable valved supply pipe, and issues in a jet through the passage 39 in the -ftip-f-The torch may be connected with the .sources of supplyof the oxygenand acetylene Athrough flexible hose or other suitable The' combustible mixture of ,site sides of the high pressure oxygen passage39. The heatingiame thus produced is brought into'conta'ctwith the metal toilbe cut and the latter I,is heated-ftherehy.v :When the metal reaches the tempertureatwhich it `oxidizes, the central. 7-streanr of@ `oxygen burns through the metal invits path, and if the 'torch is moved in eitherdirection along the line connectingfthe :outlets of the two passages-40, the metal will vbe successively heated and cut throught-,'.The tip can be 4rotatably adjusted in the headto position .the passages \4O so-as toiine up in any direcl,tion desired for convenience lin cutting. f rlhe tip. 34

is particularly adapted for making straight cuts... The modified form of tip shown in Figs. 5.and 6 is adapted for Imaking:irregular cuts.'` The'tip4 shownv in lFigs. 5 ,and 6 comprises two parts. concen- ,trircally arranged. v'.llhe ,inner part. 43 is va tubelhaving ahead 44 at its inner end adapt- .ed to seat against the. fiat linner facefof the :socket 21 of the head. .The outerpart 45is a shell having screw threads 46 at its inner end to screw into the ,threaded socket 21,'and

a hexagon 47 intermediate its ends for turning it. The inside diameter of the shell 45 is slightly greater than the outside diameter of the inner member 43, whereby an annular passage .is formed between` the two, parts. The. head 44 is conical, widening out toward `the end face of the tip, and seated Yin a conical counterbore 48 in theinner end of the -she11,45.....The inner end face .of fthe tip `is ,provided with, two lconcentric annular grooves, the inner groove 49. registering with fthefholes '31 iu-thema@ and@ -tlieffouter groove 50 registering with the side passage 38 in the head. An axial passage 51 extends from end to end of the inner member. Symmetrically arranged passages 52 vconnect with the outer annular groove 50 and open into the annular space between the two members of the tip at its inner end. Passages 53, corresponding in number and arrangement to the passages 52, connect the inner groove 49 with the passages 52 intermediate their ends. The passages 52 and 53 correspond to the passages 42 and 41 of the tip shown in Figs. 1 to 4, and admit acetylene and oxygen, respectively, to the annular space between the two parts of the tip shown in Figs. 5 and 6. The central passage 51 -conducts high pressure oxygen to the outer end of the tip. The shape of the flame produced by the tip shown in Figs. 5 and 6 is circular, with a jet of oxygen in its middle,

and consequently the torch can be moved to out in any direction as the metal is -heated all around the oxygen jet.

No claim is made in this application for the forms and arrangements of parts shown, described and claimed in mypending appgliclation, Serial No. 852,751 filed July/23,

I claim the following as my invention.

1. A detachable head member or a torch, said head member comprising a socket for receiving a pipe connection, and detachable means for retaining said pipe connection in said-socket, said head also having a tubular projection l.at an angle tofsaid socket, said projection having a seat on its periphery, a ringlhaving bearing surfaces,l on its o p- *p osite,sides,and a passage connecting its interiorftofa'pipe, andineans detachably arsaid headl member comprising a socketor.

receiving -a pipe connection,.vand4 detachable means for retaining said pipe-connection--in said socket, saidhead also havingi a tubular projection at an. angleto. said socletpsaid projection having a.circurnferential,y groove,

a.' ring having parallel sides, ia seat for one.V

. side lof said ring adjacent to .said groove, and

a cap nutcovering the ,end ofsaidlprojection and-having a bearing on its innerface conforming to the other'side of4 saidring for retaining said ring on said seat.

,. a.. A detachable head member for af Ofelia said'- vhead .member having a socket .for :a

'.tipand a chamber provided, with a closure and having an innery lend walland a central passage connecting l,.it. .with saidy socket, lmeans or supplying .gasto said. .chamb,er, said .y closure coinprising4 .a 'tubular portion projeating4 into said l chamber .in longitudinal alinement- .withpsaid ;central passage,

said' tubular Iportion g havingpits., inner, ex-

tremiti? of 18S-S diameterfltheeftheivdteef said chamber and seated against the inner end wall of said chamber whereby it is in communication with said passage, a passage in said closure leading to 'said tubular lpor-v tion for supplying gas thereto, and passages connecting said socket with said chamber and emergin in the annular space surrounding the inner end of said tubular portion of the closure.

4. A torch head having a socket, a chamber, a central passage connecting said socket with said chamber, means for sup lying gas to said chamber, a plug in said c amber, a longitudinal passage through said lug,said plug at one end of said longitud sage being seated against that portion of the wall of said chamber surrounding said central passage whereb communicatlon is established between sai central and longitudinal passages, said lughavin its inner end of less diameter t an said c amber to provide an annular space, and passages in the head connecting said socket with the annular space.

5. A T-shaped head member for a torch said head member comprising a stem and two oppositel disposed branches, one of said branches aving a socket for a tip and the other branch having a seat for a pi e connection, a central passage connecting sald socket and said seat, said stem having a mal passocket for a pipe connection, and a plurality of passages connecting said sockets in the stem and branch, respectively, said passages opening into said socket in the branch at different radial distances from its center, respectively, and one of said passages being axiall disposed in said stem.

6. X tip for an Oxy-acetylene torch, said tip having a flat inner end provided with two concentric annular grooves, an axial hole throu h said tip, and a side passa e on each si e of said axial hole and exten ing through said tip, each of said side pas sages branching into two diverging passages, respectively, connecting with said two concentric grooves.

7. A tip for an Oxy-acetylene torch, said tip having a at inner end provided with two concentric annular grooves, an axial hole through said tip, and a passage from each of said grooves into said tip, said passages converging intermediate the ends of said tip, and a duct extending from the jncture of said passages to the outer end of t e tip.

Signed at St. Louis, Missouri, this 20th day of July, 1914.

PRIOR F. W'IILLIS.` Witnesses:

A. M. HoLcomm, M. A. SHELTON. 

